Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1996LUMINA APV VAN PASSENGERREPAIR AND DIAGNOSISBRAKESTRACTION CONTROLANTI-LOCK BRAKE SYSTEMREMOVAL & INSTALLATIONHYDRAULIC MODULATOR GEARSINSTALLATION
1996 Chevrolet Lumina APV Van Passenger
Hydraulic Modulator Gears: Installation
1996 Chevrolet Lumina APV Van PassengerSECTION Installation
- Install gears in original position. DO NOT allow gears to turn during installation of gear retaining nuts. Piston in hydraulic modulator can hit bottom of bore, damaging piston. Insert a drift through holes in gears (not between gear teeth). SeeFigure .
- Insert drift through to recessed hole in hydraulic modulator base. Install gear retaining nuts. Tighten gear retaining nuts to specification. See TORQUE SPECIFICATIONS .
- Place master cylinder and hydraulic modulator assembly upside-down with gears facing you, rotate each gear counterclockwise until movement stops. Rotating gears counterclockwise will position pistons very close to top of hydraulic modulator bore, making brake bleeding easier.
- Position motor pack onto hydraulic modulator, aligning 3 motor pack gears with hydraulic modulator gears. Install motor pack attaching screws. Tighten motor pack screws to specification.
- Install gear cover onto bottom of hydraulic modulator. Tighten gear cover screws to specification. See TORQUE SPECIFICATIONS . Install hydraulic modulator and master cylinder assembly onto vehicle. Bleed brake system. See BLEEDING BRAKE SYSTEM .
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.